Air-heating stove



F. A. C. SKINNER.

AIR HEATING STOVE. APPLICATION FILED JULY27, 1921.

1 6.9%.. Patented May 23, 1922...

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AIR HEATING STOVE.

vAPPLICATION FILED JULY27, 1921. W Patented ay 23 1922'.

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To all whom it may concern:

Be it known that I, Fran A. C. SKINNER, a citizen of the United States, residing at St. Louis, State of Missouri, have invented certain new and useful Improvements in Air-Heating Stoves, of which the following is a specification.

The present invention is directed to improvements in air heating stoves, and has for its object to provide a simple construction of stove which will-present a maximum heating surface to the air currents traversing the outer casing of the stove and at the same time cause the body of air to .take up or absorb the greatest number of heat units from the heating surfaces before the same is discharged from the casing.- The improvement herein lies principally in the specific character of the retarding and air deflecting formations against which the currents of air are obliged to impinge in their passage through the chamber of the casing, together with the hotair circulating pipes leading to the flue where the waste gases give up most of their heat before discharging. Further advantages will fully appear from the following detailed description in connection with the accompanying drawings, in Which-- Figure 1 represents a combined front elevation and transverse vertical section of the outer casing showing in elevation the stove within the casing; Fig. 2 is amiddle vertical longitudinal section through the stove and outer casing; Fig. 3 is a horizontal section on the line 3-3 of Fig. 2 through the outer casing, the stove being shown in plan; and Fig. at is a rear elevation of the stove with the casing in section.

Referring to the drawings, 1 represents a conventional form of coal burning stove pro-- .vided with a feed charging mouth 2 closed by a door 3, a grate l, and ash compartment 5 with the usual door. 6 as well understood in the art.- The stove proper is preferably made in sections as shown (Fig. 2) for purposes of hauling and shipping, the end of one section being received by a recess or ofi'set formed in the contiguous end of an adjacent section as fully indicated in Fig. 2, whereby an air-tight joint is formed betweenthe sections. The stove is surrounded by an outer casing or jacket 8 which is formed at the bottom in the rear of the stove with an extension or scroll 8 for the housing of a suitable circulating fan or Specification of Letters Patent.

Patented Ma as. area. 1921. serial W0; %87,930. i

blower F,the same being directly connected to the shaft of electric motor M mounted on the scroll'8. The upper end of the casing 8 has leading therefrom a series of air-distributing pipes 12, the connections betweenthe air pipes being made'so an alr-t-ight joint to prevent the escape of the hot air from the casing except by way of the ipes 12.

T11 t e present embodiment of my invention the outer walls of the stove are provided with a series of spines or teats 13 disposed radially from the body of the stove and extending partially across the hot a1r chamber 0 between the stove and outer casing 8, the spines being preferably coneshaped and tapering outwardly as shown. The'spines'13 as formed tend to impart a rota-ry r turning movement to the air particles impinging against them, this rotary motlon tending to thoroughly churn the air and brlng a maximum quantity of the air particles into contact with the heat radiating surfaces of the spines, so that by the time the air currents reach the intake ends of the distributing pipes 12 the air has beas to provide come thoroughly heated and ready for distribution through the pipes to any suitable points of consumption. The spines may, of course, take on other forms such as pyramidal, prismatic, cylindrical, elliptical, bulbous, and the like,-without a departure from The stove is provided with aconical baffle plate 14 disposed across the combustion chamber of the stove, near the top thereof and just below the dome 1, said baffle being secured to the stove wall by four brackets 15 so as to leave an annular space a between the bafile and said wall. As the hot gases rise in the combustion chamber they will be deflected by said baffle to the walls of the combustion chamber licking said walls and the dome 1, and imparting their heat thereto for radiation into the hot air chamber C. Thus a greater part of the heat of the combustion gas will be radiated from the stove before leaving the combustion chamber.. The waste gases pass out of' the stove at one side of the dome 1' into a dis.

The bottomof the flue 19 is provided with a clean-out box 21 above the scroll 8, said clean-out havin a cover 22 which may be removed from time to time for the purpose of drawing out the soot and fine ash that is carried into the flue and pipes 18, 18.

The outside air is drawn into the casing by the fan F and then circulates through the casing chamber C as indicated by the arrows in Fig. 2, the air particles becoming thoroughly heated'by contact withthe walls of the stove, smoke pipes, the spines13 and the inner walls of the casing. Preferably, the spines are cast in horizontal rows (Fig. 1-) the spines of one row alternating with the spines of an adjacent row so that they will be in staggered relation. Features shown in the drawings but not alluded to are well understood in the art and require no description in the present connection.

Having described my invention, I claim: In an air heating stove, an inner stove, an outer casing spaced therefrom and forming an air-circulating chamber therewith, an outlet from the casing, a series of air defleeting spines radiating from the body of the stove and extending partially across the space between the stove walls and the outer casing for impart-ing their heat to the air and imparting a-rotary motion to the air particles for thoroughly mixing the same, a

\Qonical baffle plate within the combustion FRED A. o. SKINNER. 

